JPS575861A - Surface treating method - Google Patents

Surface treating method

Info

Publication number
JPS575861A
JPS575861A JP7835480A JP7835480A JPS575861A JP S575861 A JPS575861 A JP S575861A JP 7835480 A JP7835480 A JP 7835480A JP 7835480 A JP7835480 A JP 7835480A JP S575861 A JPS575861 A JP S575861A
Authority
JP
Japan
Prior art keywords
cast iron
surface layer
steel material
steel
abrasion resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7835480A
Other languages
Japanese (ja)
Inventor
Yoshinobu Takeda
Atsushi Kuroishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP7835480A priority Critical patent/JPS575861A/en
Publication of JPS575861A publication Critical patent/JPS575861A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To prepare a steel with excellent abrasion resistance by a method wherein an austenite layer supersaturated with C is formed on the surface layer of the steel by excessive carburization and said C is precipitated out as proeutectic cementite as well as annealing is applied thereto. CONSTITUTION:A cast iron or a steel material is subjected to excessive carburization at a temp. of 950-1,150 deg.C in an atmosphere with carbon potential of 1.0% or more, pref., by a vacuum carubrizing method. Subsequently, the obtained cast iron or steel material having a surface layer part to which C is imparted in the solid solution limit or more of austenite is cooled and proeutectic Fe3C is precipitated out only in the surface layer part during cooling. Next, the cast iron or steel material in this condition is annealed, pref., from a temp. of 850-950 deg.C to generate martensite. As the result, a hard texture with extremely improve abrasion resistance can be formed on the surface layer part of said cast iron or steel material as well as, at the same time, the matrix material itself can be reinforced by annealing and the abrasion resistance can be improved extremely.
JP7835480A 1980-06-12 1980-06-12 Surface treating method Pending JPS575861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7835480A JPS575861A (en) 1980-06-12 1980-06-12 Surface treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7835480A JPS575861A (en) 1980-06-12 1980-06-12 Surface treating method

Publications (1)

Publication Number Publication Date
JPS575861A true JPS575861A (en) 1982-01-12

Family

ID=13659642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7835480A Pending JPS575861A (en) 1980-06-12 1980-06-12 Surface treating method

Country Status (1)

Country Link
JP (1) JPS575861A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825620A (en) * 1971-08-07 1973-04-03
JPS5440218A (en) * 1977-09-06 1979-03-29 Mitsubishi Steel Mfg Steel resistant to aluminum attacking

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825620A (en) * 1971-08-07 1973-04-03
JPS5440218A (en) * 1977-09-06 1979-03-29 Mitsubishi Steel Mfg Steel resistant to aluminum attacking

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